Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b5e68df6e881e55…

MALICIOUS

PDF

36.3 KB Created: 2021-07-08 19:16:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9d5d97057705bd07f77cf184487aa41d SHA-1: c3a2b175f9dc04f634da31b08218d9d3af92378e SHA-256: 6b5e68df6e881e55a5f9c441e0b393d537f8101ae17b5e9fbee978b3c948f464
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The document body and embedded URLs indicate a lure for users seeking in-game advantages, which is a common tactic for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious redirection workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/406889139/coin-master-daily-spin-free-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-free-robux-free-download_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-star-wars-lightsaber-battles-hacks_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/get-gold-coin-master-village-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-robux-hack-2021-easy_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-shinobi-life-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-hacked-accounts-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-click-the-button_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/grow-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/discord-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-stuff-on-roblox-xbox-one_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/cheats-on-roblox-ipad_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003553.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3553 23504 bytes
SHA-256: 25751df842ee3e805061799731ce98a3cc84d59301b2f76e3e71a70eab8f9260
font_01_sfnt_off00006a5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5B 18596 bytes
SHA-256: 4bd887bddad3707660fa4e91161c1a16423faf42318738ff8904c415139aa447

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